#pragma GCC diagnostic ignored "-Wunused-result"
//#pragma GCC optimize "Ofast"

#include <cstdint>
#include <cstdio>
#include <cstring>

uint8_t c, ostr[200], *optr = ostr;

int main() {
  fseek(stdin, 0, 2);
  uint8_t istrlen = ftell(stdin), istr[istrlen], *iptr = istr, n = 0, k = 0;
  fseek(stdin, 0, 0);
  fread(istr, 1, istrlen, stdin);
  while ((c = *iptr++) >= '0') n = n * 10 + (c - '0');
  while ((c = *iptr++) >= '0') k = k * 10 + (c - '0');

  if (n % k == 0) {
    int8_t t = n / k, r = n - t;

    while (--t >= 0) {
      memcpy(optr, "1 ", 2);
      optr += 2;
    }

    while (--r >= 0) {
      memcpy(optr, "2 ", 2);
      optr += 2;
    }
  }
  else {
    memcpy(optr, "-1", 2);
    optr += 2;
  }

  fwrite(ostr, 1, optr - ostr, stdout);
  return 0;
}